skatefreak Posted October 18, 2009 Share Posted October 18, 2009 Hey there,Well, i cant upload the picture at the moment but i think i have a clue here as to whats wrong with the old bikey!Generally speaking the engine is fairly clean, not shining but it's not covered in mud and the other days whilst looking at getting the exhaust off i noticed there is a patch where the fins are discoloured (look like they have soot on them) and almost look burnt... Which i completely out of sorts with the rest of the engine. Also interestingly this appears starting on the fin with the head gasket seal!Is it possible that i'm dealing with a leaking gasket?As it stands i have changed the plug, checked all the fuel lines/tank/filter and cleaned the carb and the problem is still here.The engine will idle good as the day i got the bike when first started but once it warms up a little bit (or before if you rev up high for a short while) and the engine will then stop firing properly and idle really badly and any further fannying about with the throttle usually makes little difference to the rpm (whilst still sounding just as terrible) and usually will kill the engine as the throttle comes back down.One other interesting observation is that the exhaust is clear and normal when started but when it is reved and is running poorly there is a deffinate blacky smokey/sooty colour coming out with each chug of the engine!So, could this be caused by a gasket going? Any thoughts would be much appreciated Best regards-Chris Jvr Quote Link to comment Share on other sites More sharing options...
DeeJ Posted October 18, 2009 Share Posted October 18, 2009 Best to get a compression test done to check to see if a gasket has gone Quote Link to comment Share on other sites More sharing options...
skatefreak Posted October 18, 2009 Author Share Posted October 18, 2009 Well, The kick start still feels pretty much the same as when i got her but from the looks of the deposits it does look like it may have been leaking for a while, its pretty black...Cant seem to think of any other way for it to get like that, its not close enough to the exhaust to even be vaugly related and it starts right on the fins on the head/chamber seal...Will see if my local kymco dealership (luckily pretty close!) can get a gasket set and i'll work my way down, can also check the piston/rings whilst i'm there as that would support the sooty appearence of the exhaust once the engines warmed up The mistry continues...-Jvr Quote Link to comment Share on other sites More sharing options...
Chrissb6 Posted October 20, 2009 Share Posted October 20, 2009 Check that all the head bolts - nuts are all pulled down and all torqued properly, might be that a head bolt or nut has come loose. Failing that, it a new gasget, sooty deposits outside the engine will come from a leaking gasget as the fuel air mixture will have gone to poo. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.